🔥 Add initial database migrations, seeders, and factories

🎨 Refactor `Lecturer` model to include new fields and factory usage
🔧 Update `DatabaseSeeder` to handle default seeds
🛠️ Enhance `einundzwanzig` database configuration for SQLite compatibility

database/factories/RenderedEventFactory.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Event;
+use App\Models\RenderedEvent;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/**
+ * @extends Factory<RenderedEvent>
+ */
+class RenderedEventFactory extends Factory
+{
+    /**
+     * @return array<string, mixed>
+     */
+    public function definition(): array
+    {
+        return [
+            'event_id' => Event::factory()->create()->event_id,
+            'html' => '<p>'.fake()->paragraph().'</p>',
+            'profile_image' => 'https://m.primal.net/'.fake()->uuid().'.jpg',
+            'profile_name' => fake()->userName(),
+        ];
+    }
+}